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Fix ICE #4579

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flip1995 2019-09-27 15:36:56 +02:00
parent 75d951e1ad
commit 4e7e71b46c
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GPG key ID: 01C836B640FFDFB1
2 changed files with 6 additions and 4 deletions
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8
clippy_lints/src/consts.rs
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@ -152,7 +152,7 @@ impl Constant {
}
/// Parses a `LitKind` to a `Constant`.
pub fn lit_to_constant(lit: &LitKind, ty: Ty<'_>) -> Constant {
pub fn lit_to_constant(lit: &LitKind, ty: Option<Ty<'_>>) -> Constant {
use syntax::ast::*;
match *lit {
@ -161,7 +161,9 @@ pub fn lit_to_constant(lit: &LitKind, ty: Ty<'_>) -> Constant {
LitKind::ByteStr(ref s) => Constant::Binary(Lrc::clone(s)),
LitKind::Char(c) => Constant::Char(c),
LitKind::Int(n, _) => Constant::Int(n),
LitKind::Float(ref is, _) | LitKind::FloatUnsuffixed(ref is) => match ty.sty {
LitKind::Float(ref is, FloatTy::F32) => Constant::F32(is.as_str().parse().unwrap()),
LitKind::Float(ref is, FloatTy::F64) => Constant::F64(is.as_str().parse().unwrap()),
LitKind::FloatUnsuffixed(ref is) => match ty.expect("type of float is known").sty {
ty::Float(FloatTy::F32) => Constant::F32(is.as_str().parse().unwrap()),
ty::Float(FloatTy::F64) => Constant::F64(is.as_str().parse().unwrap()),
_ => bug!(),
@ -225,7 +227,7 @@ impl<'c, 'cc> ConstEvalLateContext<'c, 'cc> {
match e.node {
ExprKind::Path(ref qpath) => self.fetch_path(qpath, e.hir_id),
ExprKind::Block(ref block, _) => self.block(block),
ExprKind::Lit(ref lit) => Some(lit_to_constant(&lit.node, self.tables.expr_ty(e))),
ExprKind::Lit(ref lit) => Some(lit_to_constant(&lit.node, self.tables.expr_ty_opt(e))),
ExprKind::Array(ref vec) => self.multi(vec).map(Constant::Vec),
ExprKind::Tup(ref tup) => self.multi(tup).map(Constant::Tuple),
ExprKind::Repeat(ref value, _) => {

2
clippy_lints/src/neg_multiply.rs
View file

@ -49,7 +49,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for NegMultiply {
fn check_mul(cx: &LateContext<'_, '_>, span: Span, lit: &Expr, exp: &Expr) {
if_chain! {
if let ExprKind::Lit(ref l) = lit.node;
if let Constant::Int(val) = consts::lit_to_constant(&l.node, cx.tables.expr_ty(lit));
if let Constant::Int(val) = consts::lit_to_constant(&l.node, cx.tables.expr_ty_opt(lit));
if val == 1;
if cx.tables.expr_ty(exp).is_integral();
then {